Stegosaurus
Othniel Charles Marsh (1831 - 1899) was one of the first paleontologists to explore the rich fossil beds of the western interior of the United States. Marsh and his field crew discovered and collected an incredible wealth of dinosaur material in the badlands of Wyoming and Colorado, including such famous dinosaurs as Triceratops, Stegosaurus,Ceratosaurus, Diplodocus, "Brontosaurus" (now called Apatasaurus), "Morosaurus" (now Camarasaurus), and many others .

This illustration was prepared under the direction of Othniel Charles Marsh. We believe it to be the original drawing of the first skeletal restoration of the dinosaur Stegosaurus ungulatus. This illustration is 183 cm (almost 6 feet) wide.